Chemistry and Industry - Jamb Chemistry Past Questions and Answers

Question 101:

• JAMB 2001

Fermentation is the

A. Breaking down of carbohydrate to glucose
B. Conversion of sugar to alcohol in the presence of yeast
C. Breaking down of sugar to carbohydrate
D. Conversion of alcohol to sugar in the presence of yeast

Question 102:

• JAMB 2001

When chlorine Is passed into water and the resulting solution exposed to sunlight, the product formed are

A. Chlorine gas and hydrogen
B. Oxygen and oxochlorate (I) acid
C. Chlorine gas and oxochlorate (I) acid
D. Hydrochloric acid and oxygen

Question 103:

• JAMB 2002

The furring of kettles is caused by the presence in the water of

A. Calcium tetraoxosulphate (VI)
B. Calcium hydrogentrioxocarbonate (IV)
C. Calcium hydroxide
D. Calcium trioxocarbonate (IV)

Question 104:

• JAMB 2002

Which of these pairs are synthetic and natural macromolecules respectively?

A. Haemoglobin and nylon, creatine and polyethylene
B. Nylon and polyethlene, creatine and Haemoglobin
C. Nylon and creatine, polyethylene and haemoglobin
D. Polyethylene and creatine, nylon and haemoglobin

Question 105:

• JAMB 2002

Ordinary glass is manufactured from silica, CaCO₃ and

A. Na₂CO₃
B. K₂CO₃
C. K₂SO₄
D. NaHCO₃